Abstract:
Disclosed herein is a device-to-device discovery method in a wireless communication system. A device determines whether a first subframe for a physical layer uplink channel or signal and a second subframe for the discovery signal are the same. The device transmits the physical layer uplink channel or signal without transmitting or receiving the discovery signal, in the same subframe, when the first subframe and the second subframe are the same.
Abstract:
A first terminal for D2D communication configures a value of a first field that represents continuous transmission of scheduling assignment (SA) information as a first value, when trying to transmit the SA information in a second SA resource pool after a first SA resource pool as well as in the first SA resource pool for the SA. The first terminal transmits the SA information including the first field using the first SA resource included in a first SA resource pool.
Abstract:
A base station determines whether a reception of each uplink signal transmitted by a plurality of terminals succeeds. The base station generates a response bit map representing whether the reception succeeds. Further, the base station transmits first downlink control information (DCI) including the response bit map to the plurality of terminals through a first downlink control channel.
Abstract:
A first terminal within a first cell of a first base station receives a synchronization signal and a synchronization channel that are broadcasted through a downlink by the first base station. The first terminal acquires synchronization for D2D communication using the synchronization signal and the synchronization channel. When the first terminal is connected to the first base station, in order to request allocation of a first resource for D2D communication, the first terminal transmits first information for D2D communication to the first base station through a first data channel for cellular communication. The first terminal receives D2D control information including information about the first resource that is allocated to the first terminal from the first base station. The first terminal broadcasts a second data channel for D2D communication using the D2D control information.
Abstract:
A Device-to-Device (D2D) communication method of a first terminal is provided. The first terminal transmits a Physical D2D Broadcasting Channel (PD2DBCH) through a first area of a first frame. The first terminal transmits a signal for D2D synchronization through a second area of the first frame.
Abstract:
The present invention relates to a method and an apparatus for controlling priority in device-to-device communications. A plurality of transmission resources are classified into resource index sets depending on indexes, and a priority given to a communication object to which a device communication is applied is determined. One resource index set is allocated to a device of the communication object depending on the priority of the communication object.
Abstract:
Disclosed is a method for transmitting a discovery signal in device-to-device communication. In phase 1, for devices at a long range, a discovery signal is transmitted by dividing a band like in OFDMA, and in phase 2, for devices at a short range, the discovery signal is transmitted by using a full band.